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50,539
RESULTS

Media Type
14
collections
41,610
texts
4,412
movies
3,892
audio
438
images
123
data
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Topics & Subjects
15,246
Water Supply
13,406
Sanitation
13,365
Public Health
13,032
Disease Outbreaks
7,258
NASA Technical Reports Server (NTRS)
4,762
water
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Collection
15,481
The Medical Heritage Library
15,397
European Libraries
15,314
UK Medical Heritage Library
15,055
Wellcome Library
14,876
Medical Officer of Health reports
8,613
American Libraries
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Creator
7,258
nasa technical reports server (ntrs)
1,848
defense technical information center
1,472
united states. soil conservation service
1,010
eric
888
water mark church
421
california. dept. of water resources
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Language
44,484
English
142
French
106
German
41
Dutch
39
Spanish
35
Italian
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